---
id: CVE-2026-103493
title: >-
  In JetBrains YouTrack before 2026.2.19422 stored XSS via Mermaid and LaTeX
  content was possible
summary: >-
  In JetBrains YouTrack before 2026.2.19422 stored XSS via Mermaid and LaTeX
  content was possible
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'
cwe:
  - CWE-79
vendor: JetBrains
product: YouTrack
affected:
  - YouTrack < 2026.2.19422
published: '2026-10-01'
updated: '2026-10-01'
sourceUpdated: '2026-10-01T10:17:14.780'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-103493'
references:
  - url: 'https://www.jetbrains.com/privacy-security/issues-fixed/'
    label: cve@jetbrains.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-01T09:41:14.169Z'
---

## Overview

In JetBrains YouTrack before 2026.2.19422 stored XSS via Mermaid and LaTeX content was possible

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.